TECHNICAL DESCRIPTION
MULTICAL
®
41
5512-313 GB/01.2010/Rev. C1
36
12
Calibration and Verification
In order to be able to carry out test/verification of MULTICAL
®
41 at a minimum of time the meter has a testing
mode. When the meter is in testing mode the program runs approx. 4 times faster than in standard mode. Testing
mode also has some extra functions as described below.
(NB. MULTICAL
®
41 uses approx. 4 times more current in testing mode. However, under normal circumstances the
meter will only be in testing mode e.g. 9 hours per 5 years, and this has no influence on the total lifetime of the
battery).
Figure 27: Module and test plug (Nos. 1-8 are sealed with a verification seal)
Flow verification
Flow measurement operates with absolute time measurement.
STARTING UP
Min. 16 seconds must elapse from start-up and until true flow reading has been reached and calibration has
started.
FLOW MEASUREMENT
To obtain a correct flow measurement calibration must take min. 2 minutes.
EVACUATION
Do not evacuate MULTICAL
®
41 (subject to vacuum).
Calculator verification
Volume simulation is made by means of the built-in ”Autointegration” function (see section 12.2).
GND
GND
GND
Tx1 – from
μ
P to module
Input B – Tx2
3,6 V internal supply
Test input for
μ
P
3.6 V supply for modules
Rx1 – from module to
μ
P
Input A – Rx2